Android: Instead of copy-pasting long URLs from your browser to a friend on Whatsapp, free app ShortPaste automatically shortens the link when you copy it.

The service uses goo.gl or bit.ly to shorten the links as soon as you copy them. Bitly users can also use custom domain names by signing in, which is one of the best things you can do with your underused domains. ShortPaste also lists recently shortened links in the app's Archive so you can easily access them later.